A slide mechanism (20) includes a rear cover (22), a front cover (24) slidably connected to the rear cover, and at least two magnetic members positioned on the rear cover and the front cover respectively. The front cover can be opened/closed relative to the rear cover semi-automatically via a magnetic force created by the at least two magnetic members. One of the front cover and the rear cover forms at least one protruding portion, and the other one of the front cover and the rear cover defines at least one recessed portion for engaging with the protruding portion. When the front cover is slid to an opened or closed position, the at least one protruding portion engages in the at least one recessed portion correspondingly.